cant really beat the source audio EQ2. 10 fully-parametric bands. If I could design something comparable to that, I would--- really any multi-band parametric is ideal
Depends on what I'd be doing with it. Is it to cut low-end rumble from my DB or is it to carve a niche in between the kick-drum and lefty keyboard-keys?
Got this info off a bass freq chart pic, re-translated by YHN:
Hz
60-80- Bottom dweller
80-100 boost for lows
200 Mud city, cut!
700-1K attack! Bizzay with all instruments sonEQs.
800 "tonality" knows nose
1k riddim kicks
2k5 stringy sounds and slappity
3k boost stringsound further
6k boost clarity
I like this chart — sorry, can't remember where I got it from for proper attribution.
For what application? For my EQ pedals tuned for bass guitar the HPF affects 25-130Hz, bass peaks at ~40Hz and affects up to 325-ish, fixed mids are selectable for three peak frequencies, typically 400-700-1.2K-ish, resonant LPF for treble sweeps from 400-ish to 6K-8K-ish.
Why? Because I value having a lot of interactivity available, not just within the pedal but also between onboard preamp/pedal/amp EQ.
When I do the same pedal format for acoustic guitar I bump the bass peak up to 55 Hz or so and then measure a couple of primary midrange resonances with a parametric EQ, then change the switched frequencies to accommodate that information. I haven't done one specifically for electric guitar yet, but I'd probably take a similar tack. The variable resonance LPF would probably work great for post-distortion EQ, maybe just by itself even. And since my builds are mostly modular it'd be pretty easy to do it that way.